the membranous labyrinth is composed of ... and ... suspended within the ...

communicating sacs
ducts
bony labyrinth

name the 3 parts of the membranous labyrinth and their function:
1.
2.
3.

1. Cochlear: hearing
2. Vestibular: position of head at rest
3. Semicircular: changes in head position

in the conduction of sound, sound waves travel into the ... and vibrate the ... that in turn vibrates the ... vibration of the ... initiates “waves” in fluid of inner ear (cochlea) the waves travel up and around within the ... and back down to ...

external ear
tympanic membrane
ossicles
stapes
cochlea
round window

saccule and utricle are at right angles to each other
and respond to ... when head is at rest

gravity

there are 3 ... all at right angles to each other lying
in all 3 planes. they respond to changes in ... i.e. ... and ...

semicircular canals
position
acceleration
deceleration

the nerve responsible for transmission of hearing and balance is cranial nerve ... the ... nerve

VIII
vestibulocochlear

cranial nerve 8 passes through the temporal bone to the ...

brainstem

CN8 has two parts, what are they and what is their function:
1.
2.

Cochlear division: hearing
Vestibular division: balance

what other cranial nerve lies next to CN8 ...

CN7 - facial nerve

Acoustic neuromas are benign and arise from ... the grow slowly and expand compressing the ... causing CN dysfunction